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Blast furnace slag waste heat recovery device and method for iron and steel enterprises

A waste heat recovery device and blast furnace slag technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve the problems of low utilization rate of waste heat and difficult to achieve, and achieve the effects of high safety, simple process and good recovery effect.

Inactive Publication Date: 2016-11-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the treatment methods such as water quenching all use blast furnace slag as a raw material for the purpose of making some kind of raw material, and there are problems such as low utilization rate of waste heat and difficulty in realizing it.

Method used

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  • Blast furnace slag waste heat recovery device and method for iron and steel enterprises
  • Blast furnace slag waste heat recovery device and method for iron and steel enterprises
  • Blast furnace slag waste heat recovery device and method for iron and steel enterprises

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like Figures 1 to 4 As shown, the waste heat recovery device for blast furnace slag in an iron and steel enterprise includes a slag inlet 3, a slag outlet 4, a drum 7, an insulating wall 8, and a stirring shaft. The stirring shaft includes a water inlet I1, a water outlet I2, a central shaft 5 and The impeller 6, the drum 7 and the insulating wall 8 are concentric cylinders and the drum 7 is located inside the insulating wall 8. The upper and lower sides of the insulating wall 8 are respectively provided with water outlet II10 and water inlet II9, and the left and right sides of the insulating wall 8 are respectively provided with The slag inlet 3 on the upper part and the slag outlet 4 on the lower part, a stirring shaft is provided at the center of the drum 7, impellers 6 are evenly distributed on the hollow central shaft 5 on the stirring shaft, and the front and rear ends of the central shaft 5 are provided with feeding Water outlet Ⅰ1 and water outlet Ⅰ2.

[0026...

Embodiment 2

[0031] like Figures 1 to 4 As shown, the waste heat recovery device for blast furnace slag in an iron and steel enterprise includes a slag inlet 3, a slag outlet 4, a drum 7, an insulating wall 8, and a stirring shaft. The stirring shaft includes a water inlet I1, a water outlet I2, a central shaft 5 and The impeller 6, the drum 7 and the insulating wall 8 are concentric cylinders and the drum 7 is located inside the insulating wall 8. The upper and lower sides of the insulating wall 8 are respectively provided with water outlet II10 and water inlet II9, and the left and right sides of the insulating wall 8 are respectively provided with The slag inlet 3 on the upper part and the slag outlet 4 on the lower part, a stirring shaft is provided at the center of the drum 7, impellers 6 are evenly distributed on the hollow central shaft 5 on the stirring shaft, and the front and rear ends of the central shaft 5 are provided with feeding Water outlet Ⅰ1 and water outlet Ⅰ2.

[0032...

Embodiment 3

[0037] like Figures 1 to 4As shown, the waste heat recovery device for blast furnace slag in an iron and steel enterprise includes a slag inlet 3, a slag outlet 4, a drum 7, an insulating wall 8, and a stirring shaft. The stirring shaft includes a water inlet I1, a water outlet I2, a central shaft 5 and The impeller 6, the drum 7 and the insulating wall 8 are concentric cylinders and the drum 7 is located inside the insulating wall 8. The upper and lower sides of the insulating wall 8 are respectively provided with water outlet II10 and water inlet II9, and the left and right sides of the insulating wall 8 are respectively provided with The slag inlet 3 on the upper part and the slag outlet 4 on the lower part, a stirring shaft is provided at the center of the drum 7, impellers 6 are evenly distributed on the hollow central shaft 5 on the stirring shaft, and the front and rear ends of the central shaft 5 are provided with feeding Water outlet Ⅰ1 and water outlet Ⅰ2.

[0038]...

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Abstract

The invention relates to a blast furnace slag waste heat recovery device and method for iron and steel enterprises and belongs to the technical field of waste heat recovery. A roller and a heat preservation wall in the blast furnace slag waste heat recovery device for the iron and steel enterprises are concentric cylinders, and the roller is located inside the heat preservation wall. The upper side of the heat preservation wall cylinder is provided with a water outlet II, and the lower side of the heat preservation wall cylinder is provided with a water inlet II. The left side of the heat preservation wall is provided with a slag inlet located on the upper portion, and the right side of the heat preservation wall is provided with a slag outlet located on the lower portion. A stirring shaft is arranged at the center of the roller. Impellers are evenly distributed on the hollow center shaft on the stirring shaft. The front end of the center shaft is provided with a water inlet I, and the back end of the center shaft is provided with a water outlet I. The blast furnace slag waste heat recovery device and method for the iron and steel enterprises aim to effectively utilize waste heat of blast furnace slag through recovery, improve the recovery rate of the waste heat of the blast furnace slag and develop the blast furnace slag waste heat recovery technology for the iron and steel enterprises, and therefore the waste heat recovery method is provided for the iron and steel enterprises. The blast furnace slag waste heat recovery device and method for the iron and steel enterprises can be widely applied to waste heat recovery of the blast furnace slag of the iron and steel enterprises.

Description

technical field [0001] The invention relates to a blast furnace slag waste heat recovery device and method in iron and steel enterprises, belonging to the technical field of waste heat recovery. Background technique [0002] The ironmaking process is essentially the process of reducing iron from its natural form—iron-containing compounds such as ores. Ironmaking methods mainly include blast furnace method, direct reduction method, smelting reduction method, etc. The principle is to obtain reduced pig iron through physical and chemical reactions of ore in a specific atmosphere (reducing substances CO, H2, C; suitable temperature, etc.). Except for a small part of pig iron used for casting, most of it is used as raw material for steelmaking. Blast furnace ironmaking is the main method of modern ironmaking and an important link in iron and steel production. This method was developed and improved by ancient shaft furnace ironmaking. Although countries around the world have re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/08F27D17/00
CPCF27D17/004C21B3/08Y02P10/25
Inventor 肖松李洋刘艳娜
Owner KUNMING UNIV OF SCI & TECH